18718586304 has 224 divisors, whose sum is σ = 57607200000. Its totient is φ = 5301288960.

The previous prime is 18718586221. The next prime is 18718586311. The reversal of 18718586304 is 40368581781.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5347947 + ... + 5351445.

It is an arithmetic number, because the mean of its divisors is an integer number (257175000).

Almost surely, 2^18718586304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18718586304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28803600000).

18718586304 is an abundant number, since it is smaller than the sum of its proper divisors (38888613696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18718586304 is a wasteful number, since it uses less digits than its factorization.

18718586304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 18718586304 in words is "eighteen billion, seven hundred eighteen million, five hundred eighty-six thousand, three hundred four".